Dumping bucket



Mar. 27,' 1923. 1,449,661. 1. W.. FORSYTHE.

DUMPING BUCKET.

FILED FEB. 23. 192.2. 4 lsl-nrasr-SHEET 1.

Mar. 27, 1923. 1,449,661. J.'.W. FORSYTHE.

DUMPING BUCKET. A

mso rsa. 23. 1922.` #suivi-SHEET 2.

1. W. FORSYTHE.

DUMPING BUCKET. I

FILED fzs. 23. 1922. 4 iugm-:55m

vslots 9 and journaled `0n said Patented Mar. 27, 1923.

JOHN W. FORSYTHE, OF V7ILKI1\TSBU'RG, PENNSYLVANIA.

DUMPING BUCKET.

Application filed February 23, 1922. VSerial No. 538,615.

T all 207mm t may concern Be it known that I, JOHN IV. FoRsYrHn, a citizen of the United States, and resident of lllilkinsburg, in the county or" Allegheny and State of Pennsylvania, have invented bl certain new and useful Improvements in Dumping Buckets, of which the following is a specification.

This invention relates to dumping buckets and more particularly to self-dumping buckets, and has for its object the `provision of a lbucket of this class that will be -free of springs or other fragile parts that are liable to become broken or damaged.

Another object is to provide a bucket that may be dumped and righted by the operation of the hoisting mechanism with which it is employed without the necessity of any manual labor.

A further object is to so construct the bucket that when in use in a car or other similar location it will be so spaced from the sides thereof that the bail will be free to operate.

A still further object isA yto provide a bucket having the novel construction and combination of parts hereinafter described in detail and illustrated in the accompanying drawings, in which- Figure 1 is a side elevation ot my bucket in itsv vertical position in full lines, and in its rearwardly inclined position ready :for dumping'- in dotted lines.

Figure 2 is a side elevation of the bucket in dumping position.

Figure 3 is a rear elevation.

Figure 4L is a top plan view.

Figures 5 and 6 are side elevations vof the lower ends of the side portions of slightly modified forms of hails adapted for use with my invention.

Referring more particularly to the drawings, the numeral 2 designates the bucket body as a whole which has vertical side and rear walls and an upwardly and outwardly inclined front wall. Av trunnion block 3 having trunnions 4 is secured adjacent the lower edge of each side wall, and the forward edge of theblocks 3 extend outwardly forming bracket members 5 for a purpose to vbe described.

A bail member 6 having the usual hook engaging eye 7 at the center of its top bar and having vertically disposed side Vportions 8 which are provided with elongated trunnions, the

spacing the bucket away slots 9 providing for reciprocatory move l ment of the bail A supporting each side of relative to the trunnions.

bracket 10 is secured to the buoketbelow the trunnion ock 3 and has its upper end apertured and Jitted over the trunnion 4 so as to support the outer end thereof.

he side portions 8 of the bail are provided with projections or catches 11 adapted to be inserted between stop members 12 and 13 on the sides of the bucket when the bail is in its uppermost vertical position, and thus prevent tilting of the bail.

The sto-p member 12 projects outwardly from the side of the bucket an appreciable distance beyond the bail so as to space the bucketa sufficient distance from the side of the car or other such obstruction to prevent any interference with the free operation of the bail. i

The stop rearwardly and upwardly inclined lower face 14 adapted to formaskid or kslide bearing aga-inst which the upper face of the catch 11 on the bail will bear when operating to tilt or dump the bucket. f

The side portions 8 of the bail are provided with a short integral lever arm -15 adapted to engage the bracket member y5 on the trunnion block when the bail is permitted to move downwardly by gravity, thereby tilting or throwing the bail rearwardly so as to engage the upper face vof the member 11 with the lower inclined face 14E of the member 13. f

A stop member 16 is secured toy each side of the bucket and projects an appreciable distance outwardly therefrom. AThe member 16 is adapted to strike the bail when the bucket is tilted or dumped andy thus limit its movement; for the bail when the bail is lowered during the'loading of Athe bucket; it also co-operates with the stop member 12, and aids :in

a car or other obstruction.

In Figure 5 I havev struction for the lower end of the side portions 8 of .the bail. In this'construction .the elongated slot 9 through which the trunnion 4 is Vadapted to the same as in the preferred form. However, instead orf the lever arm 1'5 onuthe preferredv form, a downwardly projecting vtoe inemberla is provided which is fadapted to er1-gage a projection 1'5" member 13 is-provided -with a f project is substantially it also serves as a 'rest from the vsides of shown a `modified conwhat plm.

' leased the bail will jects from the side wall of the bucket at a point below and slightly forward of the trunnion 4. The operation of this form of bail is substantially the same as the preferred form.

1n Figure 6 1 have shown a still further modified construction for the lower end of the side portions 8 of the bail. 1n this construction the lower end of the bail is enlarged to form a forwardly projecting portion 8 and an elongated slot 9a is formed in the portion 8a to receive the trunnion 4. 1t will be noted that the lever 15 is omitted from this form of bail. However, the bail will automatically tilt rearwardly when the lifting pull is released and the crane hook slackened. That is, as the lifting pull is redrop by gravity until the top of the slot 9ZL engages the trunnion 4, then, due to the slot being in advance of the vertical aXis of the bail, the bail will be overbalanced and will tilt rearwardly.

In order to more clearly describe the novel features of this bucket, a detailed operation is given. Assuming that the bucket is resting on the ground, loaded, and the bail 6 is in a horizontal position resting on the stop members 16, the operation will be as follows- A crane hook or other lifting member will be secured to eye 7 of the bail and the lifting pull started so as to rotate the bail about the trunnions 4 and raise it. As the bail is raised, the upper faces of the catches 11 will engage the inclined underside 14 of the stop member 13 and force the bail downwardly until the catches 11 clear the stops 13 at which time the bail will be in a vertical position and any further lifting pull of the crane hook will lift the bail vertically relative to the trunnions and insert the catches 11 between the stops 12 and 13. The bail will continue to lift until the bot-tom of the slots 9 engage the trunnions, when the bucket will be lifted.

When it is desired to dump the bucket 2 it is again rested on the ground and the lifting pull released so as to slacken the crane hook. As the crane hook slackens the bail 6 will drop by gravity until the catches 11 are free of the stops 12 and 13, and the short. lever arms 15 will engage the bracket members 5 on the trunnion blocks, thus tilting or throwing the bail rearwardly so that the catches 11 will engage the lower inclined face 14 of the stop members 13. A lifting pull will then again be applied to the crane hook which will tend to pull the bail upwardly. However, the bail in its tilted position is locked between the brackets 5 and stop 13 and is forced to slide along the inclined face 14 of the stop 13 until 'the bottom of the slots 9 engage the trunnions 4. A continued lifting pull of the crane hook will then cause the bucket to lift, and due to the rearwardly inclined position of the bail, the bucket. will be overbalanced and therefore will tilt forwardly to dump or discharge its load.

After the load bucket, the bucket will be returned for a new load and again rested on the ground or other firm base, and the bail will be allowed to rest upon the stop members 16 in which position the above cycle of operations was started.

While 1 have shown and described only one preferred form of my improved apparatus, various changes in construction and combination of parts may be made without departing from the spirit of my invention as defined in the appended claims.

1 claim- 1. A self-dumping bucket comprising, a bucket body, a bail pivotally mounted thereon, means for locking said bail in a vertical position with relation to said bucket body, said bail being adapted to be automatically released and inclined rearwardly when the lifting pull is removed therefrom, and said bail being adapted to dump said bucket when lifting pull is again applied thereto.

2. A self-dumping bucket comprising, a bucket body, trunnions projecting outwardly from the sides of said bucket, a bail having recessed vertical side portions which engage said trunnions, said bail being adapted to move downwardly relative to said trunnions when the lifting pull is removed therefrom, and means for tilting said bail rearwardly during its downward movement so as to cause said bucket to dump when the lifting pull is again applied to said bail.

3. A self-dumping bucket comprising, a bucket body` trunnions projecting outwardly from the sides of said bucket, a bail having recessed vertical side portions which engage said trunnions, a pair of locking members on each side of said bucket, the rearmost of said locking members having its lower face inclined upwardly and rearwardly, said bail being adapted to reciprocate vertically on said trunnions, a catch on the inner face of each side portion of said bail adapted to be engaged between said locking members, means for tilting said bail rearwardly when the liftingpull is released therefrom and it is allowed to move downwardly by gravity relative to said trunnions so as to dump sai bucket when lifting pull is again applied to said bail.

4. A self-dumping bucket comprising, a bucket body, trunnions projecting outwardly from the sides of said bucket, a bail having recessed vertical side portions which engage said trunnions, a pair of locking members on each side of said bucket, the rearmost of said locking members having its lower face inclined upwardly and rearwardly, said bail being adapted to reciprocate vertically on has been dumped from the said trunnions, a catch on the inner face of each side portion of said bail adapted to be engaged between said locking members, said bail being' adapted to move downwardly by gravity when the lifting pull is removed therefrom so as to release said catches from said locking members, bracket members projee-ting from the side of the bucket adjacent said trunnions, short lever arms formed integral with and adjacent the lower end of the side portions of said bail, said lever arms being adapted to strike said brackets during the downward movement of said bail to rock said bail rearwardly so as to engage the catches on the side portions of the bail with the inclined lower face of said rearmost locking members, whereby said bail will be forced to rotate on said trunnions and move rearwardly when lifting pull is again applied to said bail, thereby dumping said bucket.

5. A self-dumping bucket body, trunnions from the sides of said recessed vertical side portions which engage said trunnions, a pair of locking members on each side ofl said bucket, the rearmost of said locking members having its lower face inclined upwardly and rearwardly, said bail being adapted to reciprocate vertically on said trunnions, a catch on the inner face of each side portion of said bail adapted to be engaged between said locking members, said ail being adapted to move downwardly by gravity when the lifting pull is removed therefrom so as to release said catches from said locking members, bracket members projecting from the side of the bucket adjacent said trunnions, short lever arms formed integral with and adjacent the lower end of the side portions of said bail, said lever arms being adapted to strike said brackets during the downward movementl of said bail to rock said bail rearwardly so as to engage the catches on the side portions of the bail with the inclined lower face of said rearmost locking members, whereby said bail will be forced to rotate on said trunnions and move rearwardly when lifting pull is again applied to said bail, thereby dumping said bucket, and means for limiting the rotating movement of said bail, and said bail being adapted to bucket comprising, a projecting outwardly bucket, a bail having have said catches automatically inserted between said locking members to again lock said bail in a vertical position by again removing the lifting pull from said bail and then applying a lifting pull to said bail to rotate it around said trunnions to a vertical position and raising said bail until said catches are in locked position between said locking members.

6. A self-dumping bucket comprising, a bucket body, trunnions pro'ecting outwardly from the sides of said bucliet, a bail having recessed vertical side portions which engage said trunnions, a pair of locking members on each side of said bucket, the rearmost of said locking members having its lower face inclined upwardly and rearwardly, said'bail being adapted to reciprocate vertically on said trunnions, a catch on the inner face of each side portion of said bail adapted to be engaged between said locking members, said bail being adapted to move downwardly by gravity when the lifting pull is removed therefrom so as to release said catches from said locking members, bracket members projecting from the side of the-bucket adjacent said trunnions, short lever arms formed integral with and adjacent the lower end of the side portions of said bail, said lever arms being adapted to strike said brackets during the downward movement of said bail to rock said bail rearwardly so as to engage the catches on the side portions of the bail with the inclined lower face of said rearmost locking members, will be forced to rotate on said trunnions and move rearwardly when lifting pull is again applied to said bail, thereby dumping said bucket, said bail being adapted to have said catches automatically inserted between f said locking members to again lock said bail in a vertical position by again removing the lifting pull from said bail and then applying` a lifting pull to said bail to rotate it around said trunnions to a vertical position and raising said bail until said catches are in locked position between said locking memers.

In testimony whereof, I have hereunto set my hand.

JOHN W. FORSYTHE.

whereby said bail 

